Medigen Vaccine Biologics Corp (高端疫苗) yesterday reported higher neutralizing antibody levels in people who were given its COVID-19 vaccine as a booster after two AstraZeneca doses, the company said. In a trial of 200 participants who received Medigen’s COVID-19 vaccine, neutralizing antibodies against the Omicron variant of SARS-CoV-2 grew by 5.7 times one month after being administered, Taoyuan General Hospital said. Medigen said that the results have been submitted to medRxiv, an online platform for researchers to share complete but unpublished papers. Another trial conducted by National Taiwan University Hospital showed that among 45 participants who received three doses of the Medigen vaccine,